Repeating output of an array - php

Question

$timein_out = $this->time_model->get_timein_out($this->input->get('i'));
$total_diff= array();
$hours = array();
$mins =array();
foreach($timein_out as $timetest)
{
$total_diff[] = strtotime($timetest["Time_out"]) - strtotime($timetest["Time_in"]);
for($key=0;$key<count($total_diff);$key++)
{
$hours[] = intval(floor($total_diff[$key]/3600));
$mins[] = intval(($total_diff[$key]-$hours[$key]*3600)/60);
}
};
echo json_encode($total_diff); // output: [33600,34560,35160]
echo json_encode($hours); // [9,9,9,9,9,9]
echo json_encode($mins); //[20,20,36,20,36,46]
The actual output should be
echo json_encode($hours); // [9,9,9,]
echo json_encode($mins); //[20,36,46]
Question: Why is the output repeating? what is the problem in my code? :( thanks.

Answer 1

may be you want the inner loop outside. try this.
foreach($timein_out as $timetest)
{
$total_diff[] = strtotime($timetest["Time_out"]) - strtotime($timetest["Time_in"]);
}
for($key=0;$key<count($total_diff);$key++)
{
$hours[] = intval(floor($total_diff[$key]/3600));
$mins[] = intval(($total_diff[$key]-$hours[$key]*3600)/60);
}

Answer 2

may be try unset()'ting the $total_diff like:
foreach($timein_out as $timetest) {
$total_diff[] = strtotime($timetest["Time_out"]) - strtotime($timetest["Time_in"]);
for($key=0;$key<count($total_diff);$key++) {
$hours[] = intval(floor($total_diff[$key]/3600));
$mins[] = intval(($total_diff[$key]-$hours[$key]*3600)/60);
}
unset($total_diff);
}